Current-voltage curve
The current-voltage curve, also known as the polarization curve, is an important tool in galvanic corrosion testing that is used to analyse the electrochemical behaviour of materials in a galvanic system. This curve shows the relationship between the applied voltage and the resulting current flow at the electrode surface.
In galvanic corrosion testing, the current-voltage curve is used to evaluate the corrosion behavior of a metal when it is in contact with another metal or immersed in an electrolyte solution. By varying the voltage, the resulting current flow is measured, which provides information about the reaction kinetics and the corrosion tendency of the system.
The analysis of the current-voltage curve makes it possible to determine various parameters such as the corrosion potential, the corrosion current and the Tafel slope. These parameters provide important information about the corrosion resistance and the behavior of the material in different environments.
The current-voltage curve is therefore a crucial tool for evaluating and understanding the corrosion resistance of materials and is used in many areas, from material testing to the development of corrosion-resistant alloys.
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